28054491263 has 4 divisors (see below), whose sum is σ = 28054855608. Its totient is φ = 28054126920.

The previous prime is 28054491181. The next prime is 28054491271. The reversal of 28054491263 is 36219445082.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 36219445082 = 2 ⋅18109722541.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28054491263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28054461263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16373 + ... + 237438.

It is an arithmetic number, because the mean of its divisors is an integer number (7013713902).

Almost surely, 2^28054491263 is an apocalyptic number.

28054491263 is a deficient number, since it is larger than the sum of its proper divisors (364345).

28054491263 is a wasteful number, since it uses less digits than its factorization.

28054491263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364344.

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 28054491263 in words is "twenty-eight billion, fifty-four million, four hundred ninety-one thousand, two hundred sixty-three".